The answer which is not a characteristic of fungi is that B. their cell walls consist mainly of cellulose.
As a matter of fact, the cell walls of plants consist mainly of cellulose, whereas the fungi cell walls consist of chitin.
Yep, very slowly but constantly shifting
Answer: D) 
Explanation:
If we assume the shape of algae cell is round or sphere.
Given: The total number of algae cells spanning the field of view = 15
At 40x field of view is 
To calculate the diameter of one algae we need to divide
by the total number algae calls spanning the field , we get
The diameter of one algae cell :

Hence, the diameter of one algae cell 
15km*0.621m=9.315m
89/9.315=9.55 minutes per mile
B. 9.55 minutes
I think it's oxygen and water because they are the substance for cellular respiration.